题解 | #计算某字符出现次数#
计算某字符出现次数
http://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
import java.util.Scanner;
public class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String str =sc.nextLine().toLowerCase();//都变成小写
String s = sc.nextLine().toLowerCase();
int l = str.length();
l=l-str.replaceAll(s,"").length();//用代替的方式删除所有要计数的字符
System.out.println(l);
}
}
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